The key points of water stabilization construction control are: control the quality of building materials, cement dosage and cement grade, the more dosage, the greater the strength; The construction time is long, and the strength decreases; Check the silt content and particle size of gravel.

Cement stabilized aggregate is also called cement stabilized graded aggregate, which can be referred to as cement aggregate or cement stabilized graded macadam for short. The so-called aggregate is a mineral aggregate mixture composed of crushed stone (or gravel), sand particles and powder (and sometimes clay particles), which is mainly composed of crushed stone (or gravel) and sand particles, and is collectively called aggregate.

At present, the cement stabilized macadam used at the grass-roots level is a material that mixes the graded macadam with the maximum particle size of 20mm with a proper amount of stone powder, adds cement and water, and achieves the strength requirements after compaction and maintenance.

Construction method of water-stable layer:

1, according to the mixture ratio, transport all kinds of graded materials to the site, pile them up in proportion, mix them evenly with large trucks, and pay attention to the graded moisture content of cement and stone, and adjust them at any time to ensure the uniform mixing of materials.

2. Pave immediately after mixing, compact with 12t roller, and manually assist in trimming, and roll for at least three times. The construction of the stable layer of each layer should be properly watered and maintained.

3, after the completion of the rolling and compaction degree inspection, should be timely health, water conservation period should not be less than 7 days. During the maintenance of cement macadam base, large trucks can't crush it, so as not to crush the subgrade.